Beats: Two police cars have identical sirens that produce sound of frequency of 570 Hz. A stationary listener is standing between two cars. One car is parked and the other is approaching the listener and both have their sirens on. The listener measures 9.0 beats per second. Find the speed of the approaching police car. The speed of sound is 340 m/s.
Fill in the blank(s) with the appropriate word(s).
5.3 m/s
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The orbital path of a satellite has two focal points. When both focal points are together
A) the satellite path is an ellipse. B) the satellite path is a circle. C) satellites lose speed.
A mass of 0.150 kg is attached to a spring with a force constant of 3.58 N/m and undergoes simple harmonic oscillations with an amplitude of 7.50 cm. What is the total mechanical energy of the system?
A) 0.0201 J B) 0.0101 J C) 0.269 J D) 0.134 J E) 0 J
Both nuclear reactors and atomic bombs use nuclear chain reactions
Indicate whether the statement is true or false
Glacial deposits are characteristically
A) well sorted and well rounded. B) composed of unsorted, angular rock fragments. C) asymmetrical rock debris. D) called outwash.